All patients will be monitored at regular clinic visits. Viral load and CD4 T-cell counts will be measured at each visit. Patients in all arms may participate in substudy A5101s (Male Genital Secretions) or substudy A5137s (Female Genital Secretions), and patients in Arms B and D may participate in substudy A5111s (Latent Infected T-Cell Clearance).